*{
    margin: 0;
    padding: 0;
}
body{
    background-color: #fff;
}
a{
    text-decoration: none;
    color: black;
}
input,select{
    outline: none;
}
ul,ol,li{
    list-style: none;
}
.banxin{
    width: 80%;
    margin: 0 auto;
}
.head{
    /* display: flex; */
    width: 100%;
    height: 30px;
    background-color: #F8F8F8;
}
.head>ul{
    display: flex;
    justify-content: space-around;
}
.first-ul{
    float: left;
    width: 200px;
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 30px;
    font-size: 12px;
    color: #888;
}
.last-ul{
    /* position: absolute;
    right: 200px; */
    float: right;
    width: 500px;
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 30px;
    font-size: 12px;
    color: #888;
}
.main{
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 100px;
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: #fff;
    
}
select{
    width: 60px;
    height: 33px;
    position: absolute;
    left: 350px;
    border: 1px solid blueviolet;
    color: #888;
}
input{
    width: 380px;
    height: 32px;
    position: absolute;
    left: 410px;
    border: 1px solid blueviolet;
    color: #888;
    text-indent: 2em;
}
button{
    width: 80px;
    height: 33px;
    position: absolute;
    left: 790px;
    color: #fff;
    text-align: center;
    background-color: blueviolet;
    border: none;
    cursor: pointer;
}